Loom shedding mechanism.



No. 876,353. PATENTED'JAN. 14. 1908. E. R. HOLMES & A. s. GOWAN.

LOOM SHEDDING MECHANISM.

APPLICATION FILED JUHE 18' 1906.

3 SHEETS-SHEET 1.

No. 876,353. PATENTED JAN. 14, 1908. E. R. HOLMES & A. S. COWAN. LOOM'SHEDDING MECHANISM.

APPLICATION FILED JUNE 18. 1906.

' 3 SHEBTSSHEET 2.

No. 876,353. PATENTED JAN. 14, 1908,. E. R. HOLMES & A. S. OOWAN. LOOM SHEDDING MECHANISM.

APPLICATION FILED .1 NE 18, 1906.

. U 3 SHEETS-SHEET 3.

UNITED STATES 15.A,' 1E1\IT( )13FIC]*3.-

T-YELBRIDGE R. HOLMES'AND ARTHUR s. COWAN, or WORCESTER, MAss'AcHUsETTs,

FASSIGNORS TO GROMPTON & KNOWLES LOOM WORKS, A CORPORATION OF MAs- 'SACHUSETTS.

and ART R S. COWAN, citizens of the United States, residing at Worcester,.in the county specification.

of Worcester andState of Massachusetts, have jolntly nvented certain new and useful Improvements in Loom Shedding. Mechanism,

of which the following is a Our invention arnsm for looms, and particularly to sheddmg mechamsm for narrow ware or tape gloom's which have two banks of swivel shuttles, and a dro shuttle la and in which a 15 single shed, an a split or ouble shed is produced, for makin sus enders, and'other woven fabrics, wit a sp tin the fabric, or with-button-holes, etc.

',The object of our invention is to improve upon the-ordinary construction of shedding mechanism in the class of looms referred to. In our improvements, we use a cone or cones in connection with the ordinary harness motion, for roducing a single shed, and

split or.double s ed. Y

Our invention consists in'certain novel features of construction of our improve- ,ments as will be hereinafter fully described. r We have only shown in the drawings sufiicient portions of the shedding mechanism of a loom, with our improvements combined therewith, to enable those skilled in the art to understand the construction and' operation thereof.-

Referringto the drawings :Figure 1 is a rearview of the shedding mechanism and our improvements combined therewith. Fig.

2 is a section through the harnesses and lay,

' on line 2, 2, Fig. 1, looking in the direction of arrow 1., same figure. Fig. 3 shows, on an enlarged scale, the parts shown at the left in Fig. 1; some of the parts are in a dlfferent positlon, and the loom arch is broken out in this figure. Fig. 4 is an end and sectional view of the parts shown in Fig. 3, looking in the direction of arrow 1), same figure the head motion, harness levers and connections are not shown in this figure, but the lay is shown. Fig. 5 is an opposite view of the parts shown in the-lower part of Fig. 3, and shows the forming of the split or double shed, and, Fig. 6 shows a piece of fabric with a split or double end, and intended to be woven by ourimproved shedd ng mecharnsm.

In the accompanying drawings, 1 are por-' Specification of Letters Patent. Application filed June 18; 1906. Serial 110- 322.126.

of the ordinary I described in reissue U. S. Letters Patent} relates to. shedding mech- LOOM' srmnnmo mscnamsm.

IPatented Jan. 14, 1908. i

I tions of the loom sides or ends; 2 are the loom arches, 3 the head motion frame. The head motion for rperating the harnesses is nowles type, shown and No. 7,784, and comprising as apart thereof the upper cylinder gear 4, the lower cylinder gear 5, the vibrator levers 6, the vibrator gears 7' mounted on the vibrator. levers 6, and the vibrator connectors, not shown, to the harness levers or jacks 8, all in the usual The lay 9 is supported on lay swords 10, only one is shown, and carries two banks of shuttles 11, see Fi s. 2 and 4. The lower end of the lay sword 10 is pivotally attached to an arm or rojection 12' on a hub 12" of an arm 12. aid hub 12" is fast on a rock shaft 13 mounted, in suitable bearin s. The arm 12 is ivotally connected to t e lower end of a rod or connector 13 the upper end of said rod 13 is adjustably connected with a link 14, pivotally attached to one arm of an angle or bell crank lever 15, pivotally mounted on a pin 16 on a stationary part of the frame, see Fig. 3. The other arm of the angle lever 15 is connected with a vibrator connector 7. The movement of the vibrator connector, through the rotation of a vibrator gear 7, according to the indication of the pattern surface, not shown, will raise and lower the lay 9 and the swivel shuttles 11 thereon, according to whether a single shed for one set of shuttles, as shown in Fig. 4, or a double or split shed for both sets-of shuttles, as shown in Fig. 2, is desired, in the usual and well known way. There are; in this instance twelve harnesses, 1 7, for the warp threads'18, see Fig. 2, which areconnected at their upper edges with the upright arms of twelve angle'or bell crank harness levers or jacks 8, pivotally mounted on a stationary part of the frame, through cords 19, leading over uide sheaves 20 on the loom arches 2, and the sheaves 21 on the stand 22, to small pulleys 23 on chains 24. Each chain 24 is attached at one end to, and passes artially around a flat surface on a cone pu le 7 25, and passes over a small pulley 23, ant is connected at its other end by a link 26, with a notch 8 in the upright arm of a harness lever 8. Only four sets of connections to the harnesses are shown in the drawings. The cone pulley 25 has in this instance twelve peripheral flat surfaces therei on, one for each. chain 24 connected with a harness lever, and is fast on a-rock shaft 27, mounted in suitable bearings 28 .on stands 28 secured to the loom arches 2, see Fig. 4. Fast on the shaft 27 is the hubv 29 of an arm 29, which carries a stud 30 secured thereto, and which in .this instance has connected therewith the inner ends of four vibrator connectors 31,, see Fig. 4. Through the movement-of the vibrator connectors 31, movement is communicated to the arm 29, and to the rock-shaft27, and the. cone pulley 25 fast thereon, to rotate said cone pulley in one direction or the other, and through the chains 24 secured thereto and to the harness levers, raise and lower thevharnesses to form the single and double sheds, as desired.

Fa'st on the end of the rock shaft 27 is the hub 32 of an arm 32, which arm is connected, through a bar or connector 33, with'an arm 34 faston a rock shaft 35 mounted in bearings '36on stands or brackets 37 and 38, secured to the loom frame. Fast on the rock I shaft 35 is a'second'cone pulley 39, having in'f 'this instance twelve peripheral fiat sur 'faces thereon. one for each chain40 which see Fig. 1, to the lower edge of a harness 17.

The rotation of'the cone pulley 25, in

either direction, will, through the shaft 27",

arm 29, connector 33, arm 34,'and shaft cause the rotation of the cone pulley 39 in the. sam'e'direction, and the consequent winding and unwinding of the chains thereon, to

' cause, in connection with the chains 24 on the cone pulley 25, and the movement 'of the harness levers 8, the raising and lowering of the harnesses 17, to form-the sheds for the swivel shuttles, as desired. It will be understood that the combined movement of the harness levers 8 and the cone pulleys 25 and 39, will form the sin le'sheds, and the double or split sheds, an allow the usual raising and lowering of the Ila messes for '-'the single shed, or the double shed position.

In said Fig. 6 is shown a detached'portion of awoven fabric, as a Suspender web, in-

filling threads.

tended to be manufacti': red by our improvements' in shedding mechanism shown in the drawings, and above described. In said Fig. 6; 46 are the warp threads, and 47, the

In the upper part of the fig'-' ure is shown the fabric in one piece, formed by the single shed shown Fig. 4, with one shuttle, while in the lower part of said figure.

g the harnesses.

is shown the fabric in two'separate pieces,

.which areformed by the double or split shed 1 shown in Fig. 2, with two shuttles. Instead of tw'opieces of fabric shown in the lower (part of Fig. "6, separated from each other, the two pieces of fabric may be attached or made in one piece, forming a button-hole.-

The-operation of our improvements will be readily understood by those skilled in the art, and briefly is as follows; Through the rotary movement of the ,vihrator gear 7, by

the-upper and-lower cylinder gears 4 and 5,

in the usual Way, and throughthe vibrator" connectors 31, movement is communicated to the arm 29, and to the rock; shaft 27, and

the-cone pulley 25 fast'thereonftorotate said cone pulley in one direction or the other, and through the chains or connectors 24',

having one end secured thereto, and passing around the pulleys 23 and attached to the harness levers 8 at their other end, and

through the cords 19 attached to the pulleys 23 and passing over guide. ulleys'21and 2U to the upper edges of the arnesses" 1 7, the

harnesses are raised. Through the cords 43 attached to the lower edges. of the-harnesses 17, and passing over guide sheaves 45 and 44 and attached to the pulleys 41, around which I the cords 40 pass, said cords having one end attached to the harness levers 8, and the other end attached to. the cone pulley 39; the

harnesses 17 are lowered. The raising and lowering of the harnesses form' the single and double sheds, as desired;'

It will be-understood thatjthe details of; construction of our improvements may be varied if desired. 7

We prefer to use two cones,xbut in light fabrics the ,lower cone may be dispensed with, and springs used to draw the harnesses down.

Having thus described our invention,

what we claim as new and desire to'secure' by Letters Patent is In'theshedding mechanism of a loomof the class described, the. combination with the harness jacks, and the harnesses, of two cone pulleys, one located intermediate the harness jacks and the upper edges of the har v nesses, and the other located intermediate the harness jacks and the lower edges of the harnesses, and connections, attached at oneend i to said cone pulleys, and passing over sin-all pulleys, and connected to the harness jacks,

and connections from said small pulleys to E. R. HOLMES. v ARTHUR -S COWAN. Witnesses; i

1 M..HAAs,-

Q DEWEY. 

